Aesculus × carnea

Red horse-chestnut
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Sapindales
Family:	Sapindaceae
Genus:	Aesculus
Species:	A. × carnea
Binomial name
	Aesculus × carnea; Zeyh.

Aesculus × carnea, or red horse-chestnut,[1] is an artificial hybrid between A. pavia (red buckeye) and A. hippocastanum (horse-chestnut). The origin of the tree is not known, but it probably first appeared in Germany before 1820. The hybrid is a medium-size tree to 20–25 m tall, intermediate between the parent species in most respects, but inheriting the red flower color from A. pavia. It is a popular tree in large gardens and parks.

Cultivars

'Briotii' (named in 1858 to honor Pierre Louis Briot (1804-1888), the chief horticulturist of the State gardens at Trianon-Versailles near Paris, France) This is the most commonly seen cultivar which has 10-inch tall, deep rosy flowers and matures as a smaller tree.[2]
'O'Neil', which produce larger (10–12 inch) panicles with brighter red flowers.
'Fort McNair' (named from where it was selected) it has dark pink flowers with yellow throats and resists leaf scorch and leaf blotch.
'Pendula' with arching branches.[3]
'Plantierensis' which has intense rose pink flowers with yellow throats and does not set fruit, which makes it less messy.[4]

References

"BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-01-25. Retrieved 2014-10-17.
"Aesculus × carnea 'Briotii'". Royal Horticultural Society. Retrieved 25 July 2013.
Govaerts, R., Michielsen, K. & Jablonski, E. (2011). Untraced Weeping Broadleaf cultivars: an overview. Belgische Dendrologie Belge Archived 2012-03-22 at the Wayback Machine 2009: 19–30.
Roth, Susan A. (2001). Taylor's guide to trees. Boston, MA: Houghton Mifflin Harcourt. pp. 408. ISBN 978-0-618-06889-0.

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[BSBI07-1] "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-01-25. Retrieved 2014-10-17.

[2] "Aesculus × carnea 'Briotii'". Royal Horticultural Society. Retrieved 25 July 2013.

[3] Govaerts, R., Michielsen, K. & Jablonski, E. (2011). Untraced Weeping Broadleaf cultivars: an overview. Belgische Dendrologie Belge Archived 2012-03-22 at the Wayback Machine 2009: 19–30.

[4] Roth, Susan A. (2001). Taylor's guide to trees. Boston, MA: Houghton Mifflin Harcourt. pp. 408. ISBN 978-0-618-06889-0.